CHICAGO (CBS) — Police at Northwestern University were investigating after someone scrawled racist and anti-Semitic graffiti in the school library.

University police said a swastika and disparaging remarks about African Americans were scrawled in pencil in a men’s restroom at the library, on Northwestern’s Evanston campus, and the incident prompted a campus-wide e-mail alert from university President Morton Schapiro, issued Tuesday.

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While the alert said University Police see no immediate danger to the campus or any specific person, Schapiro called the graffiti “offensive to the entire Northwestern community” and said it will not be tolerated.

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He wrote that “Northwestern seeks to provide a safe and welcoming environment for students, faculty and staff of all races and religious beliefs.”

“That is one of our guiding principles and something we work hard on every single day,” Schapiro said.

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Anyone with information about the incidents is asked to contact Northwestern University police at (847) 491-3456.